Sturdy, wooden frames surround safety glass in bright, clear colors. While some blocks contain sound producing balls of various materials and sizes. Others do not. These alike and different features pique curiosity and invite exploration. Children discover different ways to fit shapes together as they explore color and sound. They may hold two blocks together, one atop the other, and discover how two colors blend into one . Further they will shake the sound blocks and compare the beads inside. Thereby discovering how different a single bead sounds when compared to 10 smaller beads. Or to a spoonful teeny, tiny ones. Such play develops eye-hand coordination, fine motor skills, and spatial awareness. In addition not only to color, shape, and size recognition. But also to sound discrimination. Creative thinking grows as children experiment.